Deposition form



Patented Oct. 8,1940 e e i UNITED STATES rATENrLoFFiCE `Harold D. Rice,` Barrington, R. "I., assignor, by

mesne assignments, to United States Rubber` Company, New York, N. Y., `a corporation of NeW'ersey Application July 8,1937, Serial No. 152,585 y t i 2 claims. (or 18-41) This invention relates toa depositionform for vening space the rubber material which bridged simultaneously making a pouch von veach end thisvspace is trimmedalong the beads after the thereof. pouches areremoved from the form, In theprac'- Heretofore pouches have been 'madeby deposit-k tice of this invention `a reduction in waste mateing in the conventional manner on only'one. end rial and a `greater"production of pouches are ef- 5 of av deposition form a coating of rubber derived fected because the strip separating the beads is from an aqueous dispersion of rubben An excess relatively narrow and two pouchesare produced of coating is deposited onthe form to provide a atthe same time on-one form. marginal coating around the mouth of the pouch The foregoing advantages and other important and where the pouch is formed witha yflap for clos-v features of this invention will be more clearly I0 ing the mouth a still greater excess marginal coatunderstood by referring to the following descriping of rubber coating is deposited on the form tion and the vaccompanying drawing in which:

around the mouth and flap. The excess marginal l Fig. 1 isnan isometric view` ofadepositionform u coating is removed to produce a smooth edge embodying thisiIlVelltOIll.` y Y 15 around the mouth or mouth and flap. In such Fig. 2 is a cross-sectional view of the form on 15 prior practice the excess marginal coatingcon- 1in@ 2-`,2;\9f 1i,f.1;` y y stitutes considerable waste material and only one Fig-f3 `iS ari SOmetlC View O f a pouch plOdllCed pouch is `producedon `a form aton'e time. j 0I`1 S11Ch fOrm, and f In accordance with the present invention a Fig, 4 is a fragmentary cross,-sectional` view of,`

double end deposition form is used and a rubber a modicationofthe form shown in Figs; 1 to 3 20v coating derived from an aqueous dispersion of and taken longitudinally V.through the form rubber is deposited on each end during the same hand1e. j .i y depositing operation. The ends of the form con# `This, invention is illustrated" in reference -to a form to the shapeof the pocket `portion ofthe' "depostonform I0 as shown inFigs. 1, 2. and 4 pouch and the intermediate portion of the form for producing a pouch P (Fig, 3) having a pocket 25n` is provided with a surface formationv which exportion `land a mouthM and a 4Hap F for closing tends around the form between the,` mouth "or saine,` .the edges" of which arejprovided with arein.y mouth and flap edges of the pouches deposited forcingbead. L'Iheform maybe made of hard thereon to separate, outline and produce reinvulcanized rubber; aluminum or `other suitable forcing beads on the edges of the respective material. It` is provided with opposite side de- 30 pouches.k `position surfaces Il and opposite edge deposition The surface formation for producing the beads surfaces rI2 extending between and contiguous to on the pouches may comprise an abruptly rising the side surfaces Il, which surfaces are adapted ridge, which forms corners between the sides of to be completely covered with arubber coating dethe ridge and the contiguous deposition surface, DOSited 51'1616011 IOm an'aqlleOuS dSlJelSOIl 0f 35 which is the subject matter of an application of rubber to'prOduCe a pouch P 0h eah 0f the 0l0l10 Graham Gr. Wanless, Serial No. 152,587, led July site ends I3of the form, the pocket P of there?` 8, 1937, or such surface formation may comprise SDeCVB POllCheS being fOImed 0D the OPDOSISG parallel grooves formed in the surface ofthe form ends I3 and the mouth M and flap Ff being OIIIled 40 for producing the beads, Ahandle is connected to 011 the intermediate portion `Ul 0f the form. A 40 the body of the form. In order to prevent the surface formation is formed on the intermediate handle from making indentations in the edges of FON/i011 I4 '5 0 lJIOdllCe the bead B 011 the mouth and the pouches where it enters the surfaceof the Hap 0f each pOuChand t0 indicate the line of form, it is desirable to space lthe reinforcing Separatn beWeel the POUCIISS.

grooves so that the handle can enter the surface As illustrated in Figs. 1 and 2, the surface for- 45 between them. The grooves 'may beplaced relamation comprises a pair of parallel grooves I5 and tively close together and any such indentation I6 separated by anarrow strip I'I extending across may be minimized by making the handle relativethe opposite side deposition surfaces I I at off-set ly thin Where it passes through the ridge which positions I8 and along the edge deposition surseparates the grooves. t faces I2 between the two positions I8. The de- 50 After the coating of rubber deposited on the posited rubber collects in the `groove I5 and forms deposition form has dried, it is severed between the bead B on the pouch which is deposited on the the beads, and the tWo pouches are removed from rleft end of the form as viewed inl Fig. 1. 'I'he the form, one from each end. In the vevent the groove I6 forms the bead B on the pouch debead forming surfaces are separated by an inter posited on the right end of the form I0 as viewed 55 in Fig. 1. The strip I1 is made suciently wide to receive an attaching handle I9 which extends through the strip surface Il and into the body of the form IU and is anchored therein by a foot 20. Nuts 2l are threaded on the handle i9 for securing it to a mechanical means for carrying the form through a dipping or spraying bath.

As illustrated in Fig. 4 the bead forming grooves I5 and I6 may be placed close to each other so that their adjacent top edges terminate in a common edge or very narrow ridge Il. The handle I9 is connected to the form through the common edge l l" and is made as thin at the surface of the form l0 as the minimum limit of necessary strength will permit in order to avoid, as far as possible, indentations being formed in the beads B by the handle I9. The edge I1 in this case, may be made sufficiently sharp to sever the rubber deposited thereon between the beads by running a metal roller along the edge. In this manner the subsequent trimming of the rubber from the beads B after the removal of the pouches P maybe eliminated. l

The rubber coating maybe deposited on the form'in the conventional manner by either dipping or spraying the form with a suitably compounded aqueous dispersion of rubber. After the desired thickness of `coating has been coagulated and dried on the form it is severed along the strip Il .or common groove edge I1 so as to separate the two pouches. The vpouches may then be removed from theends of the form. In the event the form shown inliigs.-` 1 and 2 is employed the excess rubber which bridged the space between the beads Bris trimmed along the beads B after the removal of pouches. v

'I'he distancebetween the'offset positions I 8 may be made of the desired length to produce a flap of any desired length, or the distance may be made equal to zero and thereby produce pouches on each end without any flap.

The term rubber as used herein means rub-j ber` or rubber compositions containing suitable compoundingl ingredients either dispersed with or contained in the coagulated rubber derived from such dispersion.

While the preferred modification of this invention has been shown and described herein it will be understood that the changes in the details as shown may be made without departing from the spirit of the invention or the scope of the appended claims.

Having thus described my invention, what I claim and desire to protect by Letters Patent is:

l. An elongated deposition form for simultaneously forming on each end thereof a pouch having a pocket and a ap attached to the mouth of the pocket for closing same, said form having contiguous side and edge deposition surfaces, the opposite ends of said form being shaped to form the pocket portions of the pouches, and the intermediate portion of said form being adapted to form the flap portions of said pouches, said ntermediate portion of said form having spaced parallel grooves in the surface thereof extending across the opposite sides -of said form at off-set positions and extending along the opposite edges of said form between said ofi-set positions to provide the line of separation between the pouches along the edges of the flaps and the mouth openings of the pouches and to produce a bead along the edges of said pouches, and a handle connected to said deposition surfaces at a position between said grooves.

2. An elongated deposition form for simultaneously forming on each end thereof a pouch having a pocket and a ilap attached to the mouth of the pocket for closing same, said form having contiguous side and edge deposition surfaces, the opposite ends of said form being shaped to form the pocket portions of the pouches, and the intermediate portion of said form being adapted to form the iiap portions of said pouches, said intermediate portion of said form having parallel grooves in the surface thereof extending across the yopposite sides of said form at off-set positions and extending along the opposite edges of said form between said off-set positions to producel beads on said pouches, said grooves having a relatively narrow ridge extending therebetween to provide the line of separation between the pouches along the edges of the flaps and the mouth openings of the pouches, and a handle connected to said deposition surfaces by a relatively thin connection extending through and along said narrow ridge.

HAROLD D. RICE. 

